Method for preparing nickel-cobalt-manganese hydroxide

Patent metadata

Field	Value
Publication number	US-2016016815-A1
Application number	US-201314775397-A
Country	US
Kind code	A1
Filing date	Apr 28, 2013
Priority date	Mar 11, 2013
Publication date	Jan 21, 2016
Grant date	—

Abstract

A method for preparing nickel-cobalt-manganese hydroxide. The method comprises the following steps: (1) dissolving microcrystalline cellulose into water to obtain a suspension; and adding a nickel source, a cobalt source, and a manganese source into the suspension to obtain a solution containing nickel, cobalt, and manganese; (2) adding hexamethylenetetramine into the solution containing nickel, cobalt, and manganese, heating the reaction solution to 80-90° C., and reacting for 5-10 min, then heating with a microwave hydrothermal synthesis instrument at a frequency of 2450 MHz for 10-60 min; and (3) filtering the reaction solution obtained in step (2), and taking the filter residue, washing the filter residue with pure water and ethanol respectively, then drying, crushing, and screening the filter residue to obtain nickel-cobalt-manganese hydroxide. Nickel-cobalt-manganese hydroxide prepared from the abovementioned method has a uniform particle size and consistent morphology and structure; thus solving the problems of the uncontrollable appearance and structure and the inconsistent performances of the product caused by the vigorous reaction in the existing method for preparing nickel-cobalt-manganese hydroxide.

First claim

1 . A method for preparing nickel-cobalt-manganese hydroxide, characterized by comprising the following steps:
(1) dissolving microcrystalline cellulose into water, and stirring to homogenity to obtain a suspension; adding a nickel source, a cobalt source, and a manganese source into the suspension, wherein the mass ratio among the nickel source, the cobalt source, and the manganese source is (1-3):1:(1-1.5), and the ratio between the total mass of the nickel source, the cobalt source, and the manganese source and the mass of the microcrystalline cellulose is (1-3):1, and stirring to homogeneity to obtain a solution containing nickel, cobalt, and manganese; (2) adding hexamethylenetetramine into the solution containing nickel, cobalt, and manganese, making the ratio between the total mass of the nickel source, the cobalt source, and the manganese source and the mass of the hexamethylenetetramine being 1:(1-5), and stirring to homogeneity to obtain a reaction solution; heating the reaction solution to 80-90° C., and reacting for 5-10 min, then heating with a microwave hydrothermal synthesis instrument at a frequency of 2450 MHz for 10-60 min; (3) filtrating the reation solution obtained in step (2), and taking filter residue, washing the filter residue with pure water and ethanol respectively, then drying, crushing, and screening the filter residue, thus obtaining nickel-cobalt-manganese hydroxide.

2 . The method for preparing nickel-cobalt-manganese hydroxide according to claim 1 , characterized in that the nickel source is one of nickel acetate, nickel chloride or nickel sulfate.

3 . The method for preparing nickel-cobalt-manganese hydroxide according to claim 1 , characterized in that the cobalt source is one of cobalt acetate, cobalt chloride or cobalt sulfate.

4 . The method for preparing nickel-cobalt-manganese hydroxide according to claim 1 , characterized in that the manganese source is one of manganese acetate, manganese chloride or manganese sulfate.

Assignees

• Guangdong Brunp Recycling Technology Co Ltd
• Hunan Brunp Recycling Technology Co Ltd

Inventors

• Ou Yannan
• Li Changdong
• Yu Haijun

Classifications

• C01G53/82 Primary

  Compounds containing nickel, with or without oxygen or hydrogen, and containing two or more other elements · CPC title

• H01M4/0471

  involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis · CPC title

• H01M4/505

  of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy · CPC title

• H01M4/525

  of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title

• C01G53/006 Primary

  Chemistry & Metallurgy · mapped topic